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Living with Frias syndrome

A rare condition caused by a missing piece of chromosome 14, with eye, pituitary gland, hand and foot differences.

Understanding Frias syndrome

Frias syndrome, also called 14q22q23 microdeletion syndrome, is a rare condition caused by a missing piece of the long arm of chromosome 14.

Features include eye differences (such as small or absent eyeballs, droopy eyelids, and wide-set eyes), an underdeveloped pituitary gland with growth hormone deficiency and slow growth, and hand and foot differences. Others can include low muscle tone, developmental delay, facial differences, urinary or genital differences, and hearing loss. Smaller deletions may vary in effect.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Small or missing eyeballs
  • Underdeveloped pituitary gland
  • Developmental delay
  • Low muscle tone (hypotonia)
  • Small lower jaw
  • Droopy eyelids and bulging eyes

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include genetic specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

Care & treatment

Care team
Genetic specialists (geneticists)
Expert care
Ask about multidisciplinary care centers for rare conditions
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with Ring14 USA and other patient organizations
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Can chromosome testing confirm the deletion?
Do growth hormone levels need to be checked?
Which specialists should follow eyes, hearing and development?

Quick facts

Symptoms usually startduring Pregnancy, at Birth, and as an Infant
InheritanceAutosomal Dominant

It is caused by a missing piece (deletion) of chromosome 14. GARD lists autosomal dominant inheritance.

Genetic

Also known as: 14q22-q23 microdeletion syndrome; 14q22q23 microdeletion syndrome; chromosome 14q22 deletion syndrome; del(14)(q22q23); growth deficiency, facial anomalies, and brachydactyly; monosomy 14q22-q23

Patient organizations

Source: NIH GARD · Frias syndromeGARD ID 2384 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Frias syndrome.

Explore the Frias syndrome blog

Explore research for Frias syndrome

Explore actively recruiting Frias syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Frias syndrome with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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